System for detecting electrical properties of encoders in batches in high and low temperature environments

Abstract

The utility model discloses an encoder batch high and low temperature environment electrical performance detection system, which comprises an encoder data acquisition system, a driving motor system, a power supply, a temperature control box and an upper computer, and is characterized in that the encoder data acquisition system comprises an encoder main board and a data acquisition card; the driving motor system comprises a motion driving card, a servo motor and a driver. The encoder master board is connected with the data acquisition card through a serial port, and the data acquisition card is connected with the encoder; the motion driving card is connected with the driver through a serial port, and the driver is connected with the servo motor. According to the scheme, integration of the encoder data acquisition system, the driving motor system and the temperature control box is realized, encoder data acquisition and processing are integrated, data reliability is improved, product reliability is perfected, detection efficiency is greatly improved, detection stability is ensured, and popularization and application of batch tests are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of angle measurement, in particular to an encoder batch high and low temperature environment electrical performance detection system. Background Technique

[0002] An encoder is a position and speed converter that can convert mechanical or electronic signals into digital signals for processing by a computer or other digital devices.

[0003] When encoders are mass-produced, at present, the electrical performance tests are generally single normal temperature tests, which have problems such as long detection time, cumbersome detection procedures, and unclear judgment criteria. At the same time, due to problems such as changes in the clearance of the rotating bearing and drift of chip performance parameters when the encoder is under changing ambient temperature, the state of the encoder shows a large deviation compared with the normal temperature state. When mass-producing encoders, there is no means for batch testing in high and low temperature environments, and the electrical performance reliability of the encoder products cannot be guaranteed over the full temperature range. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an encoder batch high and low temperature environment electrical performance detection system for the problems existing in the prior art, to realize batch automated testing of the electrical performance of encoders, simplify the procedures, solve the problem of low efficiency of manual detection, and ensure the compliance of the product state with the product specifications; to realize the electrical performance testing of encoders under high and low temperature conditions and ensure the electrical performance reliability over the full temperature range.

[0005] The technical solution to achieve the purpose of the utility model is: an encoder batch high and low temperature environment electrical performance detection system, the system includes an encoder data acquisition system, a driving motor system, a power supply, a temperature control box and a host computer. The encoder data acquisition system includes an encoder main board and several data acquisition cards; the driving motor system includes a motion driving card, several servo motors and several drivers; the servo motors and encoders are all installed inside the temperature control box. The encoder is installed on the motor rotating table through a coupling, and the leads of the encoder and the servo motor are connected to the outside of the temperature control box; the encoder main board, data acquisition cards, power supply, motion driving card and drivers are all installed outside the temperature control box;

[0006] The motion driving card communicates with the host computer. The host computer realizes the motion driving of the driver by reading serial port data and sending command data, converts the command signal into an electrical signal to drive the servo motor to work, and each driver real-time feedbacks the current angular position and rotation speed, providing a displacement reference for the encoder test;

[0007] The encoder main board communicates with the host computer. The host computer realizes the setting of the working mode of each data acquisition card by reading serial port data and sending command data, so that it can collect encoder data of corresponding types;

[0008] The power supply communicates with the host computer. The host computer reads serial port data and sends instruction data to achieve voltage setting of the power supply and power-on time setting.

[0009] The temperature control box communicates with the host computer. The host computer reads serial port data and sends instruction data to achieve temperature monitoring and temperature setting of the temperature control box, providing a stable temperature environment for encoder testing.

[0010] Further, in the data detection mode, the data acquisition card continuously collects and compares encoder data and feeds back error information.

[0011] Further, the encoder main board is connected to the data acquisition card through a serial port to complete the distribution of data processing instructions.

[0012] Further, the motion drive card is connected to the driver through a serial port to achieve synchronous driving of multiple drivers.

[0013] Further, the motion drive card distributes instruction data through a network port.

[0014] Further, the motion drive card, the temperature control box, and the power supply are all connected to the host computer through the RS232 interface to USB serial port method.

[0015] Further, the encoder main board is connected to the host computer through a USB serial port.

[0016] Further, the data acquisition card feeds back data according to a preset data format.

[0017] Further, the encoder main board realizes the acquisition of encoder data of different types through the switching of multiple types of interfaces.

[0018] Further, the servo motor is fixed in position by a structural tooling.

[0019] Further, the data in the host computer is saved in the form of a chart.

[0020] Compared with the prior art, the remarkable advantages of the present utility model are:

[0021] (1) The present utility model realizes the integration of an encoder data acquisition system, a drive motor system, and a temperature control box, integrates encoder data acquisition and processing, reduces human errors, and saves the results in the form of a chart, improving data reliability.

[0022] (2) The present utility model realizes one-key automatic testing, loads the encoder test standards and qualified criteria according to the model parameters input into the host computer, processes the temperature control box, power supply, encoder data acquisition system, and drive motor system, and determines each test item in real time, improving the detection efficiency and reducing the personnel testing time.

[0023] (3) The present utility model realizes synchronous acquisition of data of multiple encoders, ensures the operating states of each encoder through synchronous operation, greatly improves the detection efficiency, ensures the detection stability, and is conducive to the popularization and application of batch tests.

[0024] The present utility model will be further described in detail below with reference to the accompanying drawings. Description of the Drawings

[0025] Figure 1 It is a structural block diagram of an encoder batch high and low temperature environment electrical performance detection system in an embodiment.

[0026] Figure 2 It is a schematic diagram of the encoder data acquisition card interface in an embodiment. Detailed Embodiment

[0027] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that for any technical feature that may implicitly include a software program in the present utility model, the realization of its function belongs to the prior art. The essence of the solution is to propose and improve the composition and connection relationship of the hardware part, and does not involve the improvement of the software program itself.

[0029] In an embodiment, in combination with Figure 1 , a batch high and low temperature environment electrical performance detection system for encoders is provided. The system includes an encoder data acquisition system, a drive motor system, a power supply, a temperature control box, and a host computer. The encoder data acquisition system includes an encoder main board and several data acquisition cards; the drive motor system includes a motion drive card, several servo motors, and several drivers; the servo motors and encoders are all installed inside the temperature control box. The encoder is installed on the motor rotating table through a coupling, and the leads of the encoder and the servo motor are connected to the outside of the temperature control box; the encoder main board, data acquisition cards, power supply, motion drive card, and drivers are all installed outside the temperature control box; preferably, the servo motors are fixed in position through a structural tooling. The encoder main board is connected to the data acquisition card, and the data acquisition card is connected to the encoder; the motion drive card is connected to the driver, and the driver is connected to the servo motor.

[0030] The motion drive card communicates with the host computer. The host computer reads serial port data and sends command data to achieve motion drive of the driver (including setting running speed, running acceleration, determining position, and stepping angle), converts the command signal into an electrical signal to drive the servo motor to work (realizing position and speed settings). Each driver provides real-time feedback on the current angular position and rotational speed, providing a displacement reference for encoder testing;

[0031] The encoder main board communicates with the host computer. The host computer reads serial port data and sends command data to set the working mode of each data acquisition card, enabling it to collect encoder data of the corresponding type and perform angle calculation;

[0032] The power supply communicates with the host computer. The host computer reads serial port data and sends command data to achieve voltage setting of the power supply and power-on time setting;

[0033] The temperature control box communicates with the host computer. The host computer reads serial port data and sends command data to monitor and set the temperature of the temperature control box, providing a stable temperature environment for encoder testing.

[0034] Further, in one embodiment, in the data detection mode, the data acquisition card continuously collects and compares encoder data and feeds back error information.

[0035] Further, in one embodiment, the encoder main board is connected to the data acquisition card through a serial port to complete the distribution of data processing instructions.

[0036] Further, in one embodiment, the motion drive card is connected to the driver through a serial port to achieve synchronous drive of multiple drivers.

[0037] Further, in one embodiment, the motion drive card distributes command data through a network port.

[0038] Further, in one embodiment, the motion drive card, the temperature control box, and the power supply are all connected to the host computer through the RS232 interface to USB serial port method to complete the monitoring of the test status and various parameters. The device connection is achieved by opening a fixed serial port.

[0039] Further, in one embodiment, the encoder main board is connected to the host computer through a USB serial port.

[0040] Further, in one embodiment, the data acquisition card feeds back data according to a preset data format.

[0041] Furthermore, in one of the embodiments, the encoder main board realizes the acquisition of encoder data of different types through the switching of multiple types of interfaces.

[0042] In this embodiment, the specific model of the input encoder is entered in the host computer, the stored parameters are called, the test items are automatically selected, the temperature test sequence and time are updated, and the voltage and current indexes, angle output continuity index, and on-off angle change index in the items are set.

[0043] After the host computer starts the test, it sends the encoder type to the encoder main board. The encoder main board distributes the data through the RS485 interface, controls the data acquisition card as shown in Figure 2 , and realizes the switching of CAN, SSI, RS422, RS485, and incremental interfaces. The encoder data acquisition card acquires the encoder data according to the interface type, performs calculations according to the interface protocol, and converts it into an accurate digital angle.

[0044] The host computer sends a motion instruction to the motion drive card. The motion drive card distributes the data through the network port, drives each driver and servo motor, and realizes the setting of position, speed, and acceleration. Each driver real-time feedbacks the current angle position and rotation speed.

[0045] The host computer sends a serial port instruction to the temperature control box and the programmable power supply. The temperature control box receives the serial port instructions of set temperature, temperature rise and fall rate, and heat preservation time, and real-time feedbacks the current environmental temperature and alarm status in the temperature control box; the programmable power supply receives the power channel setting, voltage setting, and current limiting setting instructions, and real-time feedbacks the voltage and current status of the current programmable power supply.

[0046] The whole machine system synchronously acquires and compares the servo motor position data and encoder data in each temperature range of the temperature control box according to the sequence of each test item, and completes the detection of the encoder angular position change amount; synchronously acquires the programmable power supply voltage and current data and encoder data according to the sequence of each test item, and confirms the correctness of the encoder output in the full voltage range and the full temperature range. And after the test is completed, the test results are saved in a charted and classified manner.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A batch high and low temperature environment electrical performance detection system for encoders, characterized in that: The system includes an encoder data acquisition system, a drive motor system, a power supply, a temperature control box and a host computer. The encoder data acquisition system includes an encoder main board and several data acquisition cards; the drive motor system includes a motion drive card, several servo motors and several drivers; the servo motor and the encoder are installed inside the temperature control box, the encoder is installed to the motor rotating table through a coupling, and the encoder and the servo motor leads are connected to the outside of the temperature control box; the encoder main board, data acquisition card, power supply, motion drive card and driver are installed outside the temperature control box; The motion drive card communicates with the host computer, which realizes the motion drive of the driver by reading serial port data and sending command data, and converts the command signal into an electrical signal to drive the servo motor to work. Each driver feeds back the current angle position and rotation speed in real time to provide a displacement reference for the encoder test; The encoder master board communicates with the host computer, and the host computer sets the working mode of each data acquisition card by reading serial port data and sending instruction data, so that it can collect encoder data of corresponding type; The power supply communicates with the host computer, and the host computer realizes the voltage setting and power-on time setting of the power supply by reading serial port data and sending instruction data; The temperature control box communicates with the host computer, and the host computer reads serial port data and sends instruction data to realize temperature monitoring and temperature setting of the temperature control box, thereby providing a stable temperature environment for encoder testing.

2. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The data acquisition card continuously acquires and compares encoder data in the data detection mode, and feeds back error information.

3. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The encoder main board is connected to the data acquisition card via a serial port to complete the distribution of data processing instructions.

4. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The motion drive card is connected to the driver via a serial port to achieve synchronous driving of multiple drivers.

5. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The motion drive card distributes the instruction data through the network port.

6. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The motion drive card, temperature control box and power supply are all connected to the host computer via the RS232 interface to USB serial port mode.

7. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The encoder main board is connected to the host computer via a USB serial port.

8. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The data acquisition card performs data feedback according to a preset data format.

9. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The encoder main board realizes the collection of encoder data of different types by switching multiple types of interfaces.

10. The encoder batch high and low temperature environment electrical performance detection system according to claim 1 is characterized in that: The data in the host computer is stored in the form of charts.

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